Zex Power Tune Plugs = lesson learned

I thought I'd give em a try.....
I might as well have rolled down my window driving down the highway and pitched 50 bucks out!!! Would have got the same benefit and the car wouldn't run like CRAP! I puttin' my dang NGK's back in...

Has ANYONE had a good experience with these things? It misses pretty bad with these things. Is it just me?